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Blue Heron Heating & Air!

Once a year for each system is the usual recommendation — cooling before summer, heating before winter. Most failures we are called out to were preventable at a service visit.

Usually ductwork, airflow, or insulation rather than the unit itself. It is worth diagnosing before replacing anything.

Every one to three months for most homes, sooner with pets or allergies. A clogged filter is the most common cause of a system that is working hard and cooling badly.